<template>
  <el-form-item :label="label" :prop="prop">
    <el-upload
      action=""
      list-type="picture-card"
      :accept="acceptFile"
      :multiple="multiple"
      :limit="limitNum"
      :auto-upload="false"
      :on-exceed="handleExceed"
      :before-upload="beforeUpdata"
      :on-change="handleChange"
      :file-list="uploadFileList"
      :on-remove="Remove"
      :class="{ hide: hideUpload }"
      :disabled="disabled"
    >
      <template #default>
        <el-icon class="upload_icon">
          <plus />
        </el-icon>
      </template>
      <template #file="{ file }">
        <div>
          <el-image style="el-upload-list__item-actions" :src="file.url"> </el-image>
          <span class="el-upload-list__item-actions">
            <span
              class="el-upload-list__item-preview"
              @click="handlePictureCardPreview(file)"
            >
              <el-icon><zoom-in /></el-icon>
            </span>
            <span class="el-upload-list__item-delete" @click="handleRemove(file)">
              <el-icon><delete /></el-icon>
            </span>
          </span>
        </div>
      </template>
      <template #tip>
        <div class="el-upload__tip">
          <!-- <span
            >单张图片大小不超过10M，支持png；jpg；jpeg格式，图片宽度不超过1440px,高度不超过1080px</span
          > -->
        </div>
      </template>
    </el-upload>
  </el-form-item>
  <el-dialog v-model="dialogVisible">
    <img w-full :src="dialogImageUrl" alt="Preview Image" />
  </el-dialog>
</template>
<script setup lang="ts">
import { ref, reactive, defineProps, onUnmounted, watch } from "vue";
import { ElForm, ElMessage } from "element-plus";
import { Plus, ZoomIn, Download, Delete, TurnOff } from "@element-plus/icons-vue";
import type { UploadFile } from "element-plus/es/components/upload/src/upload";
import { uploadFile, uploadOss, uploadFile2 } from "@/api/common";
import { IsNotEmpty, getSetionId, getImageMaxWH, getImage_wh } from "@/utils/utils";
import bus from "@/utils/bus";
const emit = defineEmits(["submit"]);

const formRef = ref<InstanceType<typeof ElForm>>();
const dialogImageUrl = ref("");
const dialogVisible = ref(false);
// const disabled = ref(false);
const hideUpload = ref(false);
var uploadFileList = ref([]);
const isEdit = ref(false); // 是否为编辑

const props = defineProps<{
  upInfo: {
    type: number; //文件类型
    label: string; //文件名称
    prop: string; // 是否是必传
    files: any; //文件
    multiple: {
      //是否支持多选
      type: boolean;
      default: false;
    };
    limitSize: number; // 最大文件上传限制
    limitNum: {
      // 上最大传数量
      type: number;
      default: 1;
    };
    acceptFile: string; // 上传类型文件判断
    disabled: {
      // 是否禁用
      type: boolean;
      default: false;
    };
  };
}>();
const {
  type,
  label,
  prop,
  files,
  multiple,
  limitSize,
  acceptFile,
  limitNum,
  uploadName,
  disabled,
} = props.upInfo;
const beforeUpdata = async (file: any) => {
  const is2M = file.size / 1024 / 1024 <= limitSize;
  const { W, H } = await getImage_wh(file);
  if (W > 1440) {
    ElMessage.warning(`上传图片尺寸最大宽度1440px`);
    handleRemove(file);
    return;
  }
  if (H > 1080) {
    ElMessage.warning(`上传图片尺寸最大高度1080px`);
    handleRemove(file);
    return;
  }
  if (!is2M) {
    ElMessage.warning(`上传的图片最大支持${limitSize}M`);
    handleRemove(file);
    return;
  }
  return is2M && W <= 1440 && H <= 1080;
};
const handleRemove = (file: UploadFile) => {
  console.log("删除--", file, uploadFileList.value);
  uploadFileList.value = uploadFileList.value.filter((item: any) =>
    IsNotEmpty(uploadFileList.value)
  );
  uploadFileList.value = uploadFileList.value.filter((item: any) => item.url != file.url);
  emit("submit", uploadFileList.value);
};
const Remove = (file: UploadFile, list: UploadFile[]) => {
  uploadFileList.value = list;
  emit("submit", list);
  bus.emit("empty");
  console.log(file, list, "===自动删除");
};
// 上传文件
const uploadImg = async (file: any) => {
  file = file.raw;
  let flag = await beforeUpdata(file);
  if (!flag) return;
  return await uploadFile2({
    file,
    fileName: file.name,
  });
};
// 长传改变
const handleChange = async (file: UploadFile, list: UploadFile[]) => {
  let existFile = list.slice(0, list.length - 1).find((f) => f.name === file.name);
  if (existFile) {
    ElMessage.error("当前文件已经存在!");
    list.pop();
    return;
  }
  const data: any = await uploadImg(file);
  uploadFileList.value.push(data);

  hideUpload.value = uploadFileList.value.length >= limitNum;
  // hideUpload.value = uploadFileList.value.length >= 1
  emit("submit", uploadFileList.value);
};
const handleExceed = (file: UploadFile, list: UploadFile[]) => {
  ElMessage.warning(
    `当前限制选择 ${limitNum} 个文件，本次选择了 ${files.length} 个文件，共选择了 ${
      files.length + list.length
    } 个文件`
  );
  Remove(file, list);
};
// 图片数据回显
const echo = (data: any) => {
  isEdit.value = true;
  if (type == 1) {
    if (data.cover_image_url) {
      uploadFileList.value.push({ url: data.cover_image_url });
    } else {
      data.forEach((item: any) => {
        uploadFileList.value.push({ url: item.absolute_url });
      });
      hideUpload.value = uploadFileList.value.length >= 1;
    }
  } else if (type == 4) {
    uploadFileList.value.push({ name: data.title, url: undefined });
    console.log(uploadFileList.value, "rereere");
  }
  return;
};
// 清空数据回显
const empty = () => {
  uploadFileList.value = [];
  console.log(111);
};
// 编辑状态时只能上传一张照片
const singleImg = (res: boolean) => {
  hideUpload.value = res;
  isEdit.value = res;
};
//上传图片的弹框
const upPic = () => {
  isEdit.value = false;
};
bus.on("upPic", upPic);
watch(
  () => uploadFileList.value.length,
  (nVal: any, oVal: any) => {
    if (uploadFileList.value.length !== 0 && isEdit.value == true) {
      hideUpload.value = true;
    } else if (oVal == 0 && isEdit.value == false) {
      hideUpload.value = false;
    } else if (hideUpload.value == false && oVal !== 0 && isEdit.value == true) {
      hideUpload.value = true;
    } else {
      hideUpload.value = false;
    }
  }
);
// 主动暴露方法
defineExpose({ empty, echo, singleImg, upPic });
const handlePictureCardPreview = (file: UploadFile) => {
  dialogImageUrl.value = file.url!;
  dialogVisible.value = true;
  console.log(dialogImageUrl.value, "----file预览");
};
// 下载
const handleDownload = (file: UploadFile) => {
  console.log(file);
};
onUnmounted(() => {
  bus.off("upPic", upPic);
});
</script>
<style lang="scss" scoped>
.pre_img_box {
  overflow: hidden;
  .pre_image {
    display: block;
    margin: auto;
    max-height: 400px;
  }
}
</style>
<style>
.hide .el-upload--picture-card {
  display: none;
}
.upload_icon {
  width: 140px;
  height: 90px;
}
</style>
